Multifunctional auxiliary chair for venipuncture of autism child patient

Abstract

The invention discloses a multifunctional auxiliary chair for venipuncture of autistic children, relates to the field of nursing instruments for the department of neurology of children, and aims to solve the problems that existing equipment is not adaptive to autistic children, and the autistic children are sensitive in feeling, weak in emotion regulation and split in function. The auxiliary chair comprises a chair body, a limb restraining assembly and an animation guiding module, and is matched with scene adaptation structures such as height adjustment and lower limb folding. The limb restraining assembly adopts a flexible wrapping layer with a pressure sensor and an adjustable restraining belt, and safe flexible restraining and pressure real-time monitoring are achieved; the animation guiding module is electrically connected with the pressure sensor, the puncture process, pacifying and science popularization animations can be dynamically switched through the display screen, character prompts can be popped up, the constraint strength can be synchronously adjusted, and emotion guiding and constraint linkage is achieved. The device effectively relieves the puncture conflict emotion of autism children, guarantees constraint safety, adapts to different heights, body types and puncture scenes, improves the one-time puncture success rate, reduces the operation risk and meets the clinical nursing requirements.

Description

Technical Field

[0001] This invention belongs to the field of pediatric neurological nursing devices, specifically relating to a multifunctional assistive chair for intravenous puncture in children with autism. Background Technology

[0002] Children with autism exhibit more pronounced sensory abnormalities compared to typically developing children due to their unique neurodevelopmental characteristics. They are particularly sensitive to hard surfaces and pressure, and also have weaker emotional regulation and self-control. During intravenous puncture procedures, these children are prone to stronger resistance due to pain, environmental stimuli, or discomfort from restraints, often exhibiting violent struggles and sudden exertion of limbs. This not only significantly increases the difficulty for medical staff in performing the puncture on the first attempt but also increases the risk of needle displacement, skin abrasions, and further intensifies the child's fear of subsequent medical procedures. Therefore, designing intravenous puncture assistance devices with precise emotional guidance, safe and flexible restraint, and scenario-adaptive functions, specifically tailored to the unique physiological and psychological characteristics of children with autism, is a key clinical nursing requirement.

[0003] In the existing technology, the intravenous puncture assistive chair for ordinary children (such as the one with publication number CN218685521U) has obvious defects and cannot meet the needs of children with autism: its emotional guidance function relies solely on toys hanging on the curved rod, which cannot dynamically adjust the guidance content according to the sudden emotional fluctuations caused by the discomfort of restraint and fear of needle insertion during the puncture of children with autism, nor can it design a special comforting plan in conjunction with the puncture process, and lacks targeted intervention for the emotions of children with autism.

[0004] Regarding limb restraint, existing pediatric puncture devices mostly use conventional structures such as mechanical clamping and rigid Velcro binding. These do not take into account the special needs of autistic children for soft contact, and rigid restraint will directly aggravate their tactile discomfort and resistance. Furthermore, they lack a real-time monitoring and feedback mechanism for restraint pressure, which can easily lead to poor blood circulation due to excessive restraint or insufficient restraint to fix their struggling limbs, further increasing the puncture risk.

[0005] Furthermore, the existing equipment does not take into account the characteristics of children with autism in terms of scene adaptability: some equipment relies on manual adjustment of height and restraint position, which is cumbersome and has low precision. It cannot quickly adapt to the sitting posture needs of children with autism of different heights, nor can it match the operating height of medical staff. Moreover, the manual adjustment process can easily cause children to become irritable. Most equipment does not have foldable restraint components for storage, which can easily obstruct puncture sites such as the instep, affecting medical staff operations. In addition, some equipment is only equipped with basic casters and does not have a braking and locking function, which makes it difficult to stabilize and fix the device during puncture and cannot cope with the device shifting due to the child's struggle.

[0006] More importantly, existing devices are not designed in an integrated manner to address the unique characteristics of autistic children, such as "sensory sensitivity, emotional resistance, and weak physical control." Instead, they focus on single functions (such as general emotional guidance and rigid constraints). They lack both stress-based state perception capabilities and dynamic guidance mechanisms achieved through animation switching. Furthermore, they fail to achieve synergistic linkage between state perception, dynamic guidance, and adjustment of the intensity of flexible constraints. Ultimately, they cannot form an effective coordination of "stress monitoring (state perception) - animation switching (dynamic guidance) - intensity adjustment (flexible constraints)," and thus cannot fundamentally solve the core problems of low cooperation and high operational risks associated with intravenous puncture in autistic children.

[0007] In summary, existing intravenous puncture assistive devices designed for typical children are insufficient to meet the clinical nursing needs of children with autism due to their lack of specific design requirements. There is an urgent need for a multifunctional assistive chair that adapts to the sensory and emotional characteristics of children with autism, enabling dynamic linkage between emotional guidance and flexible restraint, controllable restraint pressure, and flexible scenario adaptation for intravenous puncture in these children. Summary of the Invention

[0008] In view of this, the purpose of this invention is to address the shortcomings of existing equipment for intravenous puncture in children with autism, such as their sensitivity to sensation and emotional fluctuations during intravenous puncture, static emotional guidance, rigid constraint without pressure monitoring, poor scene adaptability, and lack of coordinated linkage of "pressure monitoring-animation switching-force adjustment". The invention provides a multifunctional auxiliary chair for intravenous puncture in children with autism that can achieve dynamic linkage between emotional guidance and flexible constraint, safe and controllable constraint pressure, and flexible scene adaptability.

[0009] To achieve the above-mentioned objectives, the technical solution adopted is as follows:

[0010] This invention discloses a multifunctional assistive chair for intravenous puncture in children with autism, comprising: a seat body including a base, a seat board, a backrest, and armrests; the seat board is disposed above the base for supporting the sitting posture of the child with autism; the backrest is rotatably disposed at the rear end of the seat board relative to the seat board; the armrests are fixed to both sides of the backrest and located directly above both sides of the seat board; and a limb restraint assembly including an upper limb restraint component and a lower limb restraint component; the upper limb restraint component is disposed on the armrests for restraining the upper limb movement of the child with autism; the lower limb restraint component is disposed on both sides of the seat board for restraining the lower limb movement of the child with autism; both the upper limb restraint component and the lower limb restraint component include a flexible wrapping layer, an adjustable restraint strap, and a pressure sensor, wherein the flexible wrapping layer is used to wrap the corresponding upper or lower limb of the child with autism. The system includes an adjustable restraint strap that wraps around the outside of a flexible wrapping layer, with pressure sensors embedded within the layer to monitor limb restraint pressure in real time. An animation guidance module comprises a display screen, a storage unit, and a processing unit. The storage unit contains pre-stored animation clips of the intravenous puncture procedure, preset reassurance animation clips, intravenous puncture educational animation clips, and at least one text prompt. The display screen is connected to the front of the seat via an angle adjustment bracket to play the animation clips and display text prompts. The processing unit is electrically connected to the display screen, storage unit, and pressure sensors of the limb restraint components, enabling it to adjust the playback status of the animation clips on the display screen and the restraint strength of the adjustable restraint strap based on the limb restraint pressure values ​​monitored by the pressure sensors, thus achieving synchronous linkage between animation guidance and limb restraint.

[0011] The upper limb of this invention includes the entire limb range from the arms and shoulders to the wrists, and the lower limb includes the entire limb range from the legs and hips to the ankles.

[0012] In this invention, a closed-loop linkage mechanism is constructed by connecting the processing unit to a pressure sensor, a display screen, and an adjustable restraint device, respectively, to achieve "pressure monitoring (state perception) - animation switching (dynamic guidance) - force adjustment (flexible restraint)". Pressure changes directly trigger the synchronous adaptation of animation content and restraint force, enabling the coordinated operation of the three core functions. This completely solves the core problem of existing devices having fragmented functions and being unable to integrate and adapt to the unique characteristics of autistic children—"sensory sensitivity, emotional resistance, and weak limb control"—significantly improving puncture compliance and operational safety.

[0013] Secondly, the limb restraint component is based on a flexible wrapping layer, with embedded pressure sensors and adjustable restraint straps: the flexible contact can reduce tactile discomfort for children with autism, the pressure sensor monitors the restraint pressure value in real time, and the processing unit dynamically adjusts the restraint force according to the monitoring data, which not only avoids excessive tightness that leads to poor blood circulation, but also prevents insufficient restraint that cannot fix struggling limbs, perfectly solving the key pain points of existing rigid restraints that are not suitable for sensitive sensory needs and that safety and fixation effects are difficult to balance.

[0014] Furthermore, the animation guidance module includes a display screen, a storage unit, and a processing unit. The storage unit has three preset animation clips suitable for children with autism: a pre-set intravenous puncture procedure, a pre-set soothing animation, and a pre-set intravenous puncture science animation. The processing unit, in conjunction with a pressure sensor, can accurately capture the child's emotional fluctuations based on pressure changes and dynamically switch between animation clips. This not only adapts to the easily fluctuating emotions of children with autism but also achieves targeted and dynamic emotional guidance, effectively solving the problems of static emotional guidance and lack of specific adaptability in existing devices.

[0015] Finally, the seat itself is equipped with a backrest that can rotate up and down and symmetrically fixed armrests: the backrest can be tilted forward to adapt to watching animations, and can be tilted back to relax, while the armrests provide stable support, creating a more adaptable sitting environment, helping to alleviate emotional resistance caused by stiff sitting posture and improper support, and further improving the comfort and cooperation of autistic children during puncture.

[0016] According to the multifunctional assistive chair for intravenous puncture in children with autism disclosed in this invention, the processing unit adjusts the playback status of the animation clips on the display screen and the restraint force of the adjustable restraint strap based on the limb restraint pressure value monitored by the pressure sensor. The adjustment methods include: when 0.35MPa ≤ limb restraint pressure value ≤ 0.55MPa, it is determined to be a normal cooperation state, and the processing unit controls the display screen to play an animation clip of the intravenous puncture procedure while simultaneously controlling the adjustable restraint strap to maintain the current restraint force; when the limb restraint pressure value < 0.35MPa and lasts for more than 3 seconds, it is determined to be an insufficient restraint state, and the processing unit controls the display screen to switch to playing an educational animation clip about intravenous puncture while simultaneously controlling the adjustable restraint strap to maintain the current restraint force. The restraint strap is tightened appropriately until the limb restraint pressure value is ≥0.35MPa; when the limb restraint pressure value is >0.55MPa, it is determined to be an over-restraint state, the processing unit controls the display screen to pause playback and pops up the text prompt "restraint too tight", and at the same time controls the adjustable restraint strap to loosen until the limb restraint pressure value is ≤0.55MPa; when the limb restraint pressure value changes abruptly by more than 0.15MPa, it is determined to be a limb resistance state, the processing unit controls the display screen to switch to the preset soothing animation segment, and at the same time controls the adjustable restraint strap to loosen. After the pressure value returns to 0.35MPa-0.55MPa and there is no sudden change, the display screen controls the switch back to the intravenous puncture procedure animation segment.

[0017] In this invention, by defining the control logic of four pressure states (normal cooperation, insufficient restraint, excessive restraint, and physical resistance), the animation playback and restraint intensity are dynamically adapted: it avoids excessive tightness that leads to poor blood circulation, prevents insufficient restraint from failing to fix the limbs, and can switch to soothing animations when sudden resistance occurs, ensuring the safety of restraint and the targeted nature of emotional guidance.

[0018] According to the multifunctional assistive chair for intravenous puncture in children with autism disclosed in this invention, the storage unit contains: an animation clip of the intravenous puncture process with a duration of 1-5 minutes, including a complete intravenous puncture scene of "physical examination preparation - skin disinfection - intravenous needle insertion - needle fixation - completion reward"; a preset comforting animation clip with a duration of 30-60 seconds, including interactive comforting scenes with cartoon characters; an educational animation clip of intravenous puncture with a duration of 1-2 minutes, including an introduction to the puncture principle and a demonstration of the puncture instruments; and text prompts including at least "the restraint is too tight".

[0019] In this invention, the three types of animation clips and text prompts in the storage unit are all adapted to the characteristics of children with autism: process animation helps to understand the entire operation scenario, soothing animation quickly relieves resistance, popular science animation helps to understand the essence of the operation, and "too strict" prompts provide timely warnings in special situations, thereby improving the targeted nature of guidance.

[0020] The multifunctional assistive chair for intravenous puncture in children with autism disclosed in this invention also includes a height adjustment component, which is disposed between the base and the seat plate and includes a drive motor, a ball screw, and a slider; the slider is fixedly connected to the bottom of the seat plate, and the drive motor is electrically connected to the processing unit; the drive motor can drive the ball screw to move the slider and the seat plate up and down to adapt to the operating height of children with autism of different heights and medical staff.

[0021] In this invention, the height adjustment component achieves the up and down movement of the seat plate through the cooperation of a drive motor, ball screw and slider, which can adapt to the sitting posture of children of different heights and the medical operation height without manual adjustment, thereby improving the adaptability of the equipment to different scenarios and the ease of operation.

[0022] According to the present invention, a multifunctional assistive chair for intravenous puncture in children with autism has a lower limb restraint component that is rotatably connected to both sides of the seat via a rotating shaft, and can be folded around the rotating shaft to a horizontal position with the seat and locked to adapt to the scenario of dorsum of the foot puncture in children with autism.

[0023] In this invention, the lower limb restraint component can be folded around the rotation axis to be horizontal with the seat plate and locked, which can effectively avoid the puncture area of ​​the instep and avoid obstructing the operating space. While ensuring the fixation effect of both legs, it provides an unobstructed operating environment for medical staff and improves the convenience of puncture.

[0024] According to the present invention, a multifunctional assistive chair for intravenous puncture of autistic children has an angle adjustment bracket that is detachably connected to the front side of the seat body, and the display screen can be rotated 0-60° around the horizontal axis and 0-30° around the vertical axis through the angle adjustment bracket to adapt to the viewing angle of autistic children; the display screen is a touch-sensitive liquid crystal display screen.

[0025] In this invention, the horizontal axis refers to a virtual axis that extends horizontally and parallel to the front edge of the seat body, while the vertical axis refers to a virtual axis that extends vertically and perpendicular to the seat plate. The display screen can rotate 0-60° around the horizontal axis to adapt to the head tilt angle and 0-30° around the vertical axis to adapt to the head's left and right turning preferences, allowing for alignment of the viewing angle without moving the body. The bracket is detachable and the display screen is touch-sensitive, facilitating storage, adjustment of viewing angle and operation, and ensuring the effectiveness of animation guidance.

[0026] The multifunctional assistive chair for intravenous puncture in children with autism disclosed in this invention has a backrest that can rotate up and down relative to the seat in a range of 0-45°; both the seat and the inner side of the backrest are fitted with an elastic cushioning layer, which is made of medical sponge or soft rubber and has a thickness of 5-10mm.

[0027] In this invention, the "inner side" of the seat and backrest refers to the side closest to the human body after the person sits on the seat; the 0-45° adjustment of the backrest allows for forward tilting to suit animation viewing and backward tilting to satisfy relaxation, which is in line with the characteristics of children's weak emotional regulation; the 5-10mm medical sponge / soft rubber buffer layer on the inner side of the seat and backrest is soft and skin-friendly, reducing discomfort from hard contact and adapting to the characteristics of sensory sensitivity.

[0028] According to the multifunctional assistive chair for intravenous puncture in children with autism disclosed in this invention, the flexible wrapping layer of the upper limb restraint component and the lower limb restraint component is provided with honeycomb-shaped ventilation holes through its thickness direction, and the outer surface of the flexible wrapping layer is coated with an antibacterial coating; the material of the flexible wrapping layer is one or more combinations of medical sponge, silicone or breathable flexible fabric, and the thickness is 5-8mm.

[0029] In this invention, a 5-8mm thick medical sponge / silicone / breathable flexible fabric wrapping layer is adapted to the needs of sensory sensitivity, honeycomb-shaped ventilation holes prevent stuffiness, and an antibacterial coating inhibits bacterial growth, thus comprehensively improving restraint comfort and usage safety.

[0030] According to the present invention, the multifunctional assistive chair for intravenous puncture of autistic children has an adjustable restraint strap that is detachably connected at both ends by Velcro or buckle structure, and the restraint strap can be adjusted by 10-20cm to accommodate the limb size of autistic children of different body types.

[0031] In this invention, the restraint strap is easily installed and removed using Velcro / buckles, and the 10-20cm stretch can be flexibly adjusted according to the child's limb size to avoid excessive tightness or excessive looseness, thus adapting to individual limb differences.

[0032] The multifunctional assistive chair for intravenous puncture in children with autism disclosed in this invention has symmetrical casters with braking and locking functions at the four corners of the base of the seat body.

[0033] In this invention, the universal wheels with braking and locking functions can not only enable the equipment to move flexibly and adapt to different puncture environments, but also lock the position during intravenous puncture to achieve stable positioning, prevent children from struggling and causing the equipment to shift, and ensure the stability and safety of puncture.

[0034] The beneficial effects of this invention are as follows:

[0035] (1) Addressing the core deficiency of existing devices that are not designed in an integrated manner to cater to the specific characteristics of children with autism and only focus on a single function, this invention constructs a closed-loop linkage mechanism of "pressure monitoring (state perception) - animation switching (dynamic guidance) - force adjustment (flexible constraint)" by connecting the processing unit to the pressure sensor, display screen, and adjustable restraint via electrical connection. Changes in pressure directly trigger the synchronous adaptation of animation content and restraint force, realizing the coordinated operation of the three core functions, completely solving the problem of fragmented functions and inability to be integrated and adapted to the specific characteristics of children with autism in existing devices, and significantly improving puncture compliance and operational safety.

[0036] (2) In view of the shortcomings of existing pediatric puncture equipment, which adopts rigid constraint structures such as mechanical clamping and hard Velcro binding, does not consider the flexible contact needs of autistic children and lacks pressure monitoring (which can easily lead to poor circulation or insufficient restraint), the limb restraint component of the present invention is based on a flexible wrapping layer, pressure sensor and adjustable restraint strap. The flexible material reduces contact discomfort, and the pressure sensor monitors in real time and works with the processing unit to dynamically adjust the restraint force, avoiding excessive tightness that can damage circulation and excessive looseness that is difficult to fix. It solves the problem that rigid restraint is not suitable for the needs of sensory sensitivity and that safety and fixation are difficult to balance.

[0037] (3) In view of the shortcomings of existing ordinary children's intravenous puncture auxiliary seats, which rely solely on fixed toys for emotional guidance and cannot be dynamically adjusted according to the sudden emotional fluctuations of autistic children during puncture, and lack of specificity, this invention sets up three types of preset animation segments in the animation guidance module and links the processing unit with pressure sensors. The animation segments can be dynamically switched according to the changes in limb restraint pressure (reflecting emotional state). This not only adapts to the emotional fluctuation characteristics of autistic children, but also realizes the specificity and dynamism of emotional guidance, effectively solving the problems of static emotional guidance and lack of specific adaptability of existing equipment.

[0038] (4) In view of the shortcomings of existing equipment that do not fully consider the sensory abnormalities of children with autism and the fact that they are prone to resistance due to uncomfortable sitting posture, the seat body of the present invention is equipped with a backrest that can be rotated up and down and symmetrically fixed armrests. The backrest angle can be adjusted according to the child's sitting posture preference, and the armrests provide stable support, creating a more adaptable sitting environment, reducing emotional resistance caused by stiff sitting posture and improper support, and further improving the comfort and cooperation of children with autism during puncture.

[0039] The following describes in detail the multifunctional assistive chair for intravenous puncture in children with autism, with reference to the embodiments shown in the accompanying drawings and the reference numerals. Attached Figure Description

[0040] Figure 1 This is a simplified structural diagram of the auxiliary chair of the present invention;

[0041] Figure 2 for Figure 1 A magnified view of part A.

[0042] Figure Labels

[0043] 1. Base; 2. Seat plate; 3. Backrest; 4. Armrests; 5. Upper limb restraint components; 6. Lower limb restraint components; 7. Flexible wrapping layer; 8. Honeycomb ventilation holes; 9. Adjustable restraint straps; 10. Pressure sensor; 11. Display screen; 12. Angle adjustment bracket; 13. Elastic buffer layer; 14. Rotating shaft; 15. Footrest bracket; 16. Slider; 17. Ball screw; 18. Casters. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with embodiments of this invention. Obviously, the described embodiments are one embodiment of this invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0045] like Figure 1 and Figure 2As shown, this invention discloses a multifunctional assistive chair for intravenous puncture in children with autism, comprising: a seat body, including a base 1, a seat board 2, a backrest 3, and armrests 4; the seat board 2 is disposed above the base 1 for supporting the sitting posture of the child with autism; the backrest 3 is rotatably disposed at the rear end of the seat board 2 relative to the seat board 2; the armrests 4 are fixed to both sides of the backrest 3 and located directly above both sides of the seat board 2; and a limb restraint assembly, including an upper limb restraint component 5 and a lower limb restraint component 6; the upper limb restraint component 5 is disposed on the armrests 4 for restraining the upper limb movement of the child with autism; the lower limb restraint component 6 is disposed on both sides of the seat board 2 for restraining the lower limb movement of the child with autism; both the upper limb restraint component 5 and the lower limb restraint component 6 include a flexible wrapping layer 7, an adjustable restraint strap 9, and a pressure sensor 10, the flexible wrapping layer 7 for wrapping the corresponding upper or lower limb of the child with autism, and the adjustable restraint strap 9 surrounding the flexible wrapping layer 7. The pressure sensor 10 is embedded in the flexible wrapping layer 7 and electrically connected to the processing unit via a medical-grade shielded cable to avoid electromagnetic interference in the puncture environment affecting the accuracy of pressure data monitoring. It is used to monitor the limb restraint pressure value in real time. The animation guidance module includes a display screen 11, a storage unit, and a processing unit. The storage unit pre-stores animation clips of the intravenous puncture process, preset reassurance animation clips, intravenous puncture popular science animation clips, and at least one text prompt. The display screen 11 is connected to the front of the seat body via an angle adjustment bracket 12 and is used to play animation clips and display text prompts. The processing unit is electrically connected to the display screen 11, the storage unit, and the pressure sensor 10 of the limb restraint component. Based on the limb restraint pressure value monitored by the pressure sensor 10, it can adjust the playback status of the animation clips on the display screen 11 and the restraint force of the adjustable restraint strap 9 to achieve synchronous linkage between animation guidance and limb restraint.

[0046] This invention establishes a closed-loop linkage mechanism of "pressure monitoring (state perception) - animation switching (dynamic guidance) - force adjustment (flexible constraint)" by electrically connecting the processing unit to the pressure sensor 10, the display screen 11, and the adjustable restraint strap 9. Pressure changes directly trigger animation and constraint force adaptation, solving the problem of functional fragmentation in existing equipment and improving puncture compliance and safety. Simultaneously, the flexible wrapping layer 7 reduces tactile discomfort, the animation guides adaptation to emotional fluctuations, and the backrest 3 and armrests 4 optimize the sitting environment, further alleviating children's resistance.

[0047] In a preferred embodiment, the processing unit adjusts the animation playback status of the display screen 11 and the restraint force of the adjustable restraint strap 9 based on the limb restraint pressure value monitored by the pressure sensor 10. This includes: when the limb restraint pressure value is between 0.35 MPa and 0.55 MPa, it is determined to be a normal cooperation state; the processing unit controls the display screen 11 to play an animation clip of the intravenous puncture procedure while simultaneously controlling the adjustable restraint strap 9 to maintain the current restraint force. When the limb restraint pressure value is less than 0.35 MPa and remains so for more than 3 seconds, it is determined to be an insufficient restraint state; the processing unit controls the display screen 11 to switch to playing an educational animation clip about intravenous puncture while simultaneously controlling the adjustable restraint strap 9 to tighten appropriately. The process continues until the limb restraint pressure value is ≥0.35MPa. When the limb restraint pressure value is >0.55MPa, it is determined to be an over-restraint state. The processing unit controls the display screen 11 to pause playback and pop up the text prompt "Restraint too tight". At the same time, it controls the adjustable restraint strap 9 to loosen until the limb restraint pressure value is ≤0.55MPa. When the limb restraint pressure value changes by more than 0.15MPa, it is determined to be a limb resistance state. The processing unit controls the display screen 11 to switch to the preset soothing animation segment. At the same time, it controls the adjustable restraint strap 9 to loosen. After the pressure value returns to 0.35MPa-0.55MPa and there is no change, the display screen 11 switches back to the intravenous puncture procedure animation segment.

[0048] In this embodiment, by defining the control logic of four pressure states (normal cooperation, insufficient restraint, excessive restraint, and physical resistance), the animation playback and restraint intensity are dynamically adapted: it avoids excessive tightness that leads to poor blood circulation, prevents insufficient restraint from failing to fix the limbs, and can switch to soothing animations when sudden resistance occurs, ensuring the safety of restraint and the targeted nature of emotional guidance.

[0049] In a preferred embodiment, the storage unit contains: an animation clip of the intravenous puncture process with a duration of 1-5 minutes, including a complete intravenous puncture scene of "physical examination preparation - skin disinfection - intravenous needle insertion - needle fixation - completion reward"; a preset reassurance animation clip with a duration of 30-60 seconds, including interactive reassurance scenes with cartoon characters; an intravenous puncture science popularization animation clip with a duration of 1-2 minutes, including an introduction to the puncture principle and a demonstration of the puncture instruments; and text prompts including at least "the restraint is too tight".

[0050] In this embodiment, the three types of animation clips and text prompts in the storage unit are all adapted to the characteristics of children with autism: process animation helps to understand the entire operation scenario, soothing animation quickly relieves resistance, popular science animation helps to understand the essence of the operation, and "too strict" prompts provide timely warnings in special situations to improve the targeted guidance.

[0051] like Figure 1As shown, in this embodiment of the invention, a height adjustment component is also included. The height adjustment component is located between the base 1 and the seat plate 2, and includes a drive motor (not shown), a ball screw 17, and a slider 16. The ball screw 17 is supported between the base 1 and the seat plate 2 by upper and lower bearing seats to ensure rotational stability. The slider 16 has an internal thread adapted to the ball screw 17 on its inner side, and is securely fixed to the bottom of the seat plate 2 by bolts on its outer side. The drive motor is electrically connected to the processing unit, and the processing unit is connected to the display screen 11 (a touch-sensitive LCD display). The screen and signal are interconnected. During operation, medical staff can directly input the target height value on the display screen 11 according to the height requirements of the autistic child or their own operating height requirements (or select preset common height options, such as a child sitting posture adaptation height of 35-55cm and a medical staff operating adaptation height of 70-90cm). After receiving the instruction, the processing unit controls the drive motor to start and drives the ball screw 17 to rotate, thereby driving the slider 16 to move up and down precisely along the axis of the ball screw 17, ultimately realizing the height adjustment of the seat plate 2 to adapt to actual use needs.

[0052] In this embodiment, the height adjustment component achieves automated up-and-down movement of the seat plate 2 through the cooperation of the drive motor, ball screw 17, and slider 16, eliminating the need for manual adjustment. This reduces operational complexity and avoids the frustration caused to children by device shaking or operational noise during manual adjustment. Simultaneously, relying on the linkage between the processing unit and the display screen 11, visual input and precise control of the height are achieved, enhancing operational convenience. It should be noted that the principle of lifting and lowering via the ball screw 17 is an existing structure, and the height control logic of "display input - processing unit command - motor drive" implemented through programming is also a conventional technical method in this field, and will not be elaborated further here. Furthermore, upper and lower limit sensors (not shown in the figure) can be added inside the base 1, and these sensors are electrically connected to the processing unit. The upper and lower limit sensors correspond to the highest and lowest safe lifting positions of the seat plate 2, respectively. When the seat plate 2 is raised or lowered to the corresponding positions, the upper and lower limit sensors trigger signals and transmit them to the processing unit. The processing unit then controls the drive motor to stop, preventing the seat plate 2 from overtraveling and improving the safety of the height adjustment process.

[0053] like Figure 1As shown, in a preferred embodiment, the lower limb restraint component 6 is rotatably connected to both sides of the seat plate 2 via a rotation axis 14 composed of a first rotation axis and a second rotation axis, in conjunction with the footrest bracket 15. It can also be folded around the rotation axis 14 to a horizontal position relative to the seat plate 2 and locked, adapting to scenarios involving dorsolateral venous puncture in children with autism. Specifically, one end of the first rotation axis is hinged to the side of the seat plate 2, and the other end is hinged to one end of the second rotation axis. The first rotation axis can rotate vertically relative to the side of the seat plate 2, and the second rotation axis can rotate horizontally relative to the side of the seat plate 2. The other end of the second rotation axis is hinged to the footrest bracket 15, and the lower limb restraint component 6 is mounted on the footrest bracket 15. Through the coordinated rotation of the footrest bracket 15, the first rotation axis, and the second rotation axis, the lower limb restraint component 6 can fold around the rotation axis 14 with the footrest bracket 15, ultimately maintaining a horizontal position relative to the seat plate 2 and locking.

[0054] In this embodiment, the lower limb restraint component 6, relying on the foot support bracket 15 and the linkage structure of the first and second rotating axes, can be folded around the rotating axis 14 to be horizontal with the seat plate 2 and locked, effectively avoiding the puncture area of ​​the dorsum of the foot and preventing obstruction of the operating space. When performing dorsum of the foot vein puncture, this folding structure not only ensures the restraint and fixation effect of both legs (excluding the dorsum of the foot area), but also provides medical staff with an unobstructed dorsum of the foot operating environment, significantly improving the convenience of the puncture operation while ensuring restraint stability.

[0055] like Figure 1 As shown, in a preferred embodiment, the angle adjustment bracket 12 consists of a first bracket and a second bracket to achieve multi-angle adjustment of the display screen 11, adapting to the viewing angle of children with autism. Specifically, one end of the first bracket is threaded to the front side of the base plate 2, and the other end is connected to one end of the second bracket via a ball joint. The other end of the second bracket is detachably connected to the display screen 11 via a threaded connection. Based on the rotational characteristics of the ball joint, the second bracket can rotate up and down and left and right relative to the first bracket, thereby causing the display screen 11 to rotate 0-60° around the horizontal axis and 0-30° around the vertical axis. Simultaneously, the display screen 11 is a touch-sensitive liquid crystal display.

[0056] In this embodiment, the display screen 11 can rotate 0-60° around the horizontal axis to adapt to the tilt angle of a child's head, and rotate 0-30° around the vertical axis to adapt to the left and right turning preferences of the head, so that the child can accurately align the viewing angle with the display screen without moving the body; the detachable design of the first bracket of the angle adjustment bracket 12 being threadedly connected to the base plate 2 and the second bracket being threadedly connected to the display screen 11 makes it convenient for medical staff to disassemble and store according to the needs of the scenario; the flexible rotation characteristics of the ball joint connection, combined with the adjustment range of 0-60° and 0-30°, can fully cover the viewing preferences of children with autism, ensure the effective communication of animated guidance content, and improve the child's cooperation with the intravenous puncture procedure.

[0057] like Figure 1 As shown, in a preferred embodiment, the backrest 3 can rotate up and down relative to the seat 2 within a range of 0-45°. This rotation can be achieved through conventional structures such as hinges and latches, which are known existing features and will not be elaborated further here. Both the seat 2 and the backrest 3 have an elastic buffer layer 13 attached to their inner sides. The buffer layer is made of medical sponge or soft rubber and has a thickness of 5-10mm.

[0058] In this embodiment, the backrest 3 can be adjusted from 0 to 45° to allow for forward tilting to facilitate animation viewing and backward reclining to provide relaxation. This aligns with the weak emotional regulation characteristics of children with autism, allowing them to achieve comfort by adjusting their posture during the puncture process. The 5-10mm medical sponge or soft rubber elastic buffer layer 13 on the inner side of the seat 2 and backrest 3 is soft and skin-friendly, reducing discomfort caused by hard contact and effectively adapting to the sensory sensitivity of children with autism, thereby improving physical comfort and cooperation during the puncture.

[0059] like Figure 1 As shown, in a preferred embodiment, the flexible wrapping layer 7 of the upper limb restraint component 5 and the lower limb restraint component 6 is provided with honeycomb-shaped ventilation holes 8 extending along its thickness direction, and the outer surface of the flexible wrapping layer 7 is coated with an antibacterial coating; the antibacterial coating can be selected from one of silver ion antibacterial coating, nano zinc oxide antibacterial coating, or quaternary ammonium salt antibacterial coating, wherein the silver ion antibacterial coating has broad-spectrum antibacterial properties and can effectively inhibit common pathogenic bacteria such as Staphylococcus aureus and Escherichia coli; the nano zinc oxide antibacterial coating has good safety and is suitable for children's use; the quaternary ammonium salt antibacterial coating has long-lasting antibacterial properties and is washable. The flexible wrapping layer 7 is made of one or more combinations of medical sponge, silicone, or breathable flexible fabric, and has a thickness of 5-8 mm.

[0060] In this embodiment, a 5-8mm thick medical sponge / silicone / breathable flexible fabric wrapping layer 7 is adapted to the sensory sensitivity needs of children with autism, honeycomb-shaped ventilation holes 8 avoid limb stuffiness and discomfort, and antibacterial coating (silver ion, nano zinc oxide or quaternary ammonium salt type) can effectively inhibit bacterial growth. The comfort and safety of the restraint components are comprehensively improved from the aspects of skin-friendliness, breathability and antibacterial properties, reducing the risk of children's resistance due to skin irritation or bacterial infection.

[0061] like Figure 1 and Figure 2As shown in this embodiment of the invention, the adjustable restraint strap 9 of the upper limb restraint component is detachably connected to the two sides of the armrest 4 using Velcro (not shown) or push-button safety buckles (not shown). Similarly, the adjustable restraint strap 9 of the lower limb restraint component is detachably connected to the two sides of the footrest bracket 15 via Velcro or buckles. The tightness adjustment of the adjustable restraint strap 9 is achieved by a micro servo motor, which is electrically connected to a processing unit. The processing unit outputs pulse signals based on the pressure data monitored by the pressure sensor, controlling the motor to rotate forward and backward to tighten or loosen the restraint strap. The adjustment accuracy can reach ±1mm, ensuring smooth and seamless force adjustment. The extension / retraction adjustment range of the adjustable restraint strap 9 is 10-20cm, and the size can be adapted by adjusting the adhesive length of the Velcro or the fastening position of the buckle.

[0062] In this embodiment, the adjustable restraint strap 9 uses Velcro or a press-type safety buckle, which can be easily attached or pressed to fasten during installation and removal. It is convenient to operate and not easy to accidentally open, allowing medical staff to quickly complete limb restraint and release. The 10-20cm telescopic adjustment range can be flexibly adjusted according to the limb thickness of autistic children, avoiding excessive tightness that may cause discomfort to the limbs, or excessive looseness that may cause restraint failure. It perfectly adapts to the individual differences of children of different body types, ensuring the effectiveness of restraint while taking into account ease of use and comfort.

[0063] like Figure 1 As shown, in a preferred embodiment, the base 1 of the seat body is symmetrically provided with four universal wheels 18 with brake locking function at the bottom corners. The brake locking adopts a conventional foot pedal structure (the wheel is limited by the brake pad when the pedal is pressed, and the lock is released when the pedal is lifted), which is known in the prior art and will not be described in detail here.

[0064] In this embodiment, the caster wheel 18 can move flexibly to adapt to different puncture environments, and can quickly lock the device position during puncture to prevent the device from shifting due to the child's struggle, thus ensuring puncture stability and safety.

[0065] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0066] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment includes only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A multifunctional assistive chair for intravenous puncture in children with autism, characterized in that, include: The seat body includes a base (1), a seat (2), a backrest (3), and armrests (4); the seat (2) is located above the base (1) and is used to support the sitting posture of autistic children; the backrest (3) is rotatably mounted on the rear end of the seat (2) relative to the seat (2); the armrests (4) are fixed to both sides of the backrest (3) and located directly above both sides of the seat (2); The limb restraint assembly includes an upper limb restraint component (5) and a lower limb restraint component (6); the upper limb restraint component (5) is located on the armrest (4) and is used to restrain the upper limb movement of autistic children; the lower limb restraint component (6) is located on both sides of the seat board (2) and is used to restrain the lower limb movement of autistic children; both the upper limb restraint component (5) and the lower limb restraint component (6) include a flexible wrapping layer (7), an adjustable restraint strap (9) and a pressure sensor (10); the flexible wrapping layer (7) is used to wrap the corresponding upper or lower limb of the autistic child; the adjustable restraint strap (9) is arranged around the outside of the flexible wrapping layer (7); and the pressure sensor (10) is embedded in the flexible wrapping layer (7) and is used to monitor the limb restraint pressure value in real time. The animation guidance module includes a display screen (11), a storage unit, and a processing unit. The storage unit pre-stores animation clips of the intravenous puncture process, preset reassurance animation clips, intravenous puncture science popularization animation clips, and at least one text prompt. The display screen (11) is connected to the front of the seat body via an angle adjustment bracket (12) for playing the animation clips and displaying the text prompts. The processing unit is electrically connected to the display screen (11), the storage unit, and the pressure sensor (10) of the limb restraint component. Based on the limb restraint pressure value monitored by the pressure sensor (10), it can adjust the playback status of the animation clips on the display screen (11) and the restraint force of the adjustable restraint belt (9) to achieve synchronous linkage between animation guidance and limb restraint.

2. The multifunctional assistive chair for intravenous puncture in children with autism according to claim 1, characterized in that, The processing unit adjusts the animation playback status of the display screen (11) and the restraint force of the adjustable restraint strap (9) based on the limb restraint pressure value monitored by the pressure sensor (10). When 0.35MPa≤limb restraint pressure value≤0.55MPa, it is judged as a normal cooperation state. The processing unit controls the display screen (11) to play the animation clip of the intravenous puncture process, and at the same time controls the adjustable restraint belt (9) to maintain the current restraint force. When the limb restraint pressure value is <0.35MPa and lasts for more than 3 seconds, it is determined to be an insufficient restraint state. The processing unit controls the display screen (11) to switch to the playback of the popular science animation clip on venipuncture, and at the same time controls the adjustable restraint belt (9) to tighten appropriately until the limb restraint pressure value is ≥0.35MPa. When the limb restraint pressure value is >0.55MPa, it is determined to be an over-restraint state. The processing unit controls the display screen (11) to pause playback and pop up the text prompt "restraint too tight". At the same time, it controls the adjustable restraint belt (9) to loosen until the limb restraint pressure value is ≤0.55MPa. When the limb restraint pressure value changes by more than 0.15 MPa, it is determined to be a limb resistance state. The processing unit controls the display screen (11) to switch to the preset soothing animation clip and controls the adjustable restraint belt (9) to loosen. After the pressure value returns to 0.35 MPa-0.55 MPa and there is no change, the display screen (11) is controlled to switch back to the intravenous puncture procedure animation clip.

3. The multifunctional assistive chair for intravenous puncture in children with autism according to claim 1, characterized in that, In the storage unit: the intravenous puncture process animation clip is 1-5 minutes long and includes a complete intravenous puncture scene of "physical examination preparation - skin disinfection - intravenous needle insertion - needle fixation - completion reward"; the preset reassurance animation clip is 30-60 seconds long and includes cartoon character interaction and reassurance scenes; the intravenous puncture science popularization animation clip is 1-2 minutes long and includes an introduction to the puncture principle and a demonstration of the puncture instruments; the text prompts include at least "the restraint is too tight".

4. The multifunctional assistive chair for intravenous puncture in children with autism according to claim 1, characterized in that, It also includes a height adjustment component, which is located between the base (1) and the seat plate (2), including a drive motor, a ball screw (17) and a slider (16); the slider (16) is fixedly connected to the bottom of the seat plate (2), and the drive motor is electrically connected to the processing unit; the drive motor can drive the ball screw (17) to move the slider (16) and the seat plate (2) up and down to adapt to the operating height of autistic children and medical staff of different heights.

5. The multifunctional assistive chair for intravenous puncture in children with autism according to claim 1, characterized in that, The lower limb restraint component (6) is rotatably connected to both sides of the seat plate (2) via a rotating shaft (14), and can be folded around the rotating shaft (14) to a state that is horizontal with the seat plate (2) and locked to adapt to the scenario of dorsolateral vein puncture in children with autism.

6. The multifunctional assistive chair for intravenous puncture in children with autism according to claim 1, characterized in that, The angle adjustment bracket (12) is detachably connected to the front side of the seat body, and the display screen (11) can rotate 0-60° around the horizontal axis and 0-30° around the vertical axis through the angle adjustment bracket (12) to adapt to the viewing angle of children with autism; the display screen (11) is a touch-sensitive liquid crystal display screen.

7. The multifunctional assistive chair for intravenous puncture in children with autism according to claim 1, characterized in that, The backrest (3) can rotate up and down relative to the seat (2) within a range of 0-45°; the inner sides of both the seat (2) and the backrest (3) are fitted with an elastic buffer layer (13), which is made of medical sponge or soft rubber and has a thickness of 5-10mm.

8. The multifunctional assistive chair for intravenous puncture in children with autism according to claim 1, characterized in that, The flexible wrapping layer (7) of the upper limb restraint component (5) and the lower limb restraint component (6) is provided with honeycomb-shaped ventilation holes (8) through its thickness direction, and the outer surface of the flexible wrapping layer (7) is coated with an antibacterial coating; the material of the flexible wrapping layer (7) is one or more of medical sponge, silicone or breathable flexible fabric, and the thickness is 5-8mm.

9. The multifunctional assistive chair for intravenous puncture in children with autism according to claim 1, characterized in that, The two ends of the adjustable restraint strap (9) are detachably connected by Velcro or buckle structure, and the stretch adjustment of the restraint strap is 10-20cm to adapt to the limb size of autistic children of different body types.

10. The multifunctional assistive chair for intravenous puncture in children with autism according to any one of claims 1-9, characterized in that, The base (1) of the seat body is symmetrically provided with universal wheels (18) with braking and locking functions at the four corners of the bottom.

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